aman-kassa-flutter/lib/views/check/image_show_container.dart

import 'dart:convert';
import 'dart:io';
import 'package:aman_kassa_flutter/core/entity/Voucher.dart';
import 'package:aman_kassa_flutter/core/locator.dart';
import 'package:aman_kassa_flutter/core/models/check_image_modal.dart';
import 'package:aman_kassa_flutter/core/models/aman_dao.dart';
import 'package:aman_kassa_flutter/core/models/card_data.dart';
import 'package:aman_kassa_flutter/core/models/dialog_models.dart';
import 'package:aman_kassa_flutter/core/route_names.dart';
import 'package:aman_kassa_flutter/core/services/BankService.dart';
import 'package:aman_kassa_flutter/core/services/dialog_service.dart';
import 'package:aman_kassa_flutter/core/services/navigator_service.dart';
import 'package:aman_kassa_flutter/redux/constants/setting_const.dart';
import 'package:aman_kassa_flutter/redux/state/setting_state.dart';
import 'package:aman_kassa_flutter/redux/store.dart';
import 'package:aman_kassa_flutter/shared/app_colors.dart';
import 'package:aman_kassa_flutter/shared/ui_helpers.dart';
import 'package:aman_kassa_flutter/views/settings/printer/PrinterTest.dart';
import 'package:aman_kassa_flutter/views/payment/payment_view.dart';
import 'package:aman_kassa_flutter/widgets/fields/busy_button_icon.dart';
import 'package:esc_pos_bluetooth/esc_pos_bluetooth.dart';
import 'package:esc_pos_utils/esc_pos_utils.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter_bluetooth_basic/flutter_bluetooth_basic.dart';
import 'package:material_design_icons_flutter/material_design_icons_flutter.dart';
import 'package:esys_flutter_share/esys_flutter_share.dart';
import 'package:url_launcher/url_launcher.dart';

class ImageShowContainer extends StatefulWidget {
  final ImageShowModel showModel;

  ImageShowContainer(this.showModel);

  @override
  _ImageShowContainerState createState() => _ImageShowContainerState();
}

class _ImageShowContainerState extends State<ImageShowContainer> {
  final PrinterBluetoothManager printerManager = PrinterBluetoothManager();
  final DialogService _dialogService = locator<DialogService>();
  final BluetoothDevice printerBtDevice = Redux.store.state.settingState.printerBT;

  bool _printing = false;

  void _print() async {
    final SettingState state = Redux.store.state.settingState;
    if(state.printerBT == null) {
      _dialogService.showDialog(description: 'Укажите в настройках принтер для печати чеков');
      return;
    }

    bool isIos = Platform.isIOS;
    int chunkSizeBytes = 3096;
    int queueSleepTimeMs = 50;

    if(isIos){
      chunkSizeBytes = 75;
      queueSleepTimeMs = 10;
    }

    setState(() {
      _printing = true;
    });
    try {
      printerManager.selectPrinter(PrinterBluetooth(state.printerBT));
      PaperSize paper = state.printerPaperSize == SettingPrinterPaperM80
          ? PaperSize.mm80
          : PaperSize.mm58;
      if (SettingPrinterEncodingImage == state.printerEncoding) {
        final PosPrintResult res = await printerManager.printTicket(
            await printImageCheck(paper, widget.showModel.data.base64Data),
            chunkSizeBytes: chunkSizeBytes,
            queueSleepTimeMs: queueSleepTimeMs);
        if (res.value != 1) {
          _dialogService.showDialog(description: res.msg);
        }
      } else {
        final PosPrintResult res = await printerManager.printTicket(
            await printTextCheck(
                paper, state.printerEncoding,
                jsonDecode(widget.showModel.data.textData)),
            chunkSizeBytes: chunkSizeBytes,
            queueSleepTimeMs: queueSleepTimeMs);
        if (res.value != 1) {
          _dialogService.showDialog(description: res.msg);
        }
      }
    } finally {
      setState(() {
        _printing = false;
      });
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        //backgroundColor: fillColor,
        title: Text(widget.showModel.title),
        actions: [
          if(_printing)
            Padding(
              padding: const EdgeInsets.only(right: 8.0),
              child: SizedBox(
                width: 36.0,
                child: Center(
                  child: CircularProgressIndicator(
                    strokeWidth: 2,
                    valueColor: new AlwaysStoppedAnimation<Color>(
                        whiteColor),
                  ),
                ),
              ),
            )
          else
            IconButton(icon: Icon(Icons.print), onPressed: _print)
        ],
      ),
      body: ListView(
        children: <Widget>[imageFromBase64String(widget.showModel.data.base64Data)],
      ),
      floatingActionButton: MyFloatingActionButton(widget.showModel),
    );
  }
}

Padding imageFromBase64String(String base64String) {
  return Padding(
    padding: const EdgeInsets.symmetric(vertical: 10.0, horizontal: 8.0),
    child: Image.memory(base64Decode(base64String)),
  );
}

class ImageShowModel {
  final CheckImageModal data;
  final String title;
  final String url;
  final CardData cardData;
  final Voucher voucher;

  ImageShowModel({this.data, this.title, this.url, this.cardData, this.voucher});
}

class MyFloatingActionButton extends StatefulWidget {
  final ImageShowModel data;
  MyFloatingActionButton(this.data);
  @override
  _MyFloatingActionButtonState createState() => _MyFloatingActionButtonState();
}

class _MyFloatingActionButtonState extends State<MyFloatingActionButton> {
  bool showFab = true;
  DialogService _dialog = locator<DialogService>();
  NavigatorService _navigatorService = locator<NavigatorService>();


  double sheetHeight = 260;



  @override
  Widget build(BuildContext context) {


    return showFab
        ? FloatingActionButton(
            child: Icon(Icons.share),
            onPressed: () {
              var bottomSheetController = showBottomSheet(
                  context: context,
                  builder: (bottomSheetContext) => Container(
                      padding: const EdgeInsets.symmetric(horizontal: 10.0),
                      decoration: BoxDecoration(
                          color: Colors.white,
                          borderRadius: BorderRadius.all(Radius.circular(15)),
                          boxShadow: [
                            BoxShadow(
                                blurRadius: 10,
                                color: Colors.grey[300],
                                spreadRadius: 5)
                          ]),
                      height: sheetHeight,
                      child: Column(
                        children: <Widget>[
                          verticalSpaceSmall,
                          BusyButtonIcon(
                            title: 'WhatsApp',
                            onPressed: callWhatsApp,
                            mainColor: greenColor,
                            icon: MdiIcons.whatsapp,
                            enabled: widget.data.url != null,
                          ),
                          verticalSpaceSmall,
                          BusyButtonIcon(
                            title: 'QR-код чека',
                            onPressed: qrGenerate,
                            mainColor: primaryColor,
                            icon: MdiIcons.qrcode,
                            enabled: widget.data.url != null,
                          ),
                          verticalSpaceSmall,
                          BusyButtonIcon(
                            title: 'Поделиться',
                            onPressed: shareFile,
                            mainColor: redColor,
                            icon: Icons.share,
                          ),
                        ],
                      )));
              bottomSheetController.closed.then((value) {
                showFloatingActionButton(true);
              });
            },
          )
        : Container();
  }

  void shareFile() async {
    try {
      await Share.file('Aman Kassa', 'aman_kassa_check.png',
          base64Decode(widget.data.data.base64Data), 'image/png');
    } catch (e) {
      print('error: $e');
    }
  }

  void qrGenerate() async {
    _navigatorService.push(QrViewRoute,
        arguments:
            ImageShowModel(url: widget.data.url, title: 'Спасибо за покупку'));
  }

  void callWhatsApp() async {
    DialogResponse response = await _dialog.showConfirmationDialogInput(
        description: 'Номер телефона',
        cancelTitle: 'Отмена',
        confirmationTitle: 'Отправить',
        formatType: 'phone');
    if (response.confirmed) {
      String phoneNumber = response.responseText;
      String msg = "Спасибо за покупку! \r\n ${widget.data.url} ";
      launchWhatsApp(phone: phoneNumber, message: msg);
    }
  }

  void launchWhatsApp({
    @required String phone,
    @required String message,
  }) async {
    String url() {
      if (Platform.isIOS) {
        return "whatsapp://wa.me/$phone/?text=${Uri.encodeFull(message)}";
      } else {
        return "whatsapp://send?phone=$phone&text=${Uri.encodeFull(message)}";
      }
    }

    if (await canLaunch(url())) {
      await launch(url());
    } else {
      _dialog.showDialog(description: 'Отсутсвует приложение WhatsApp');
    }
  }

  void showFloatingActionButton(bool value) {
    setState(() {
      showFab = value;
    });
  }
}